Answer:
Before Google, we actually had to physically look things up in this building full of knowledge.
This type of food, which is a fungus, is often served on supreme pizza, in spaghetti and in a particular "cream of" style soup
One might hang a locket from this
I am the first you ever saw, what greets you every morning and what goes out in the end.
Once you know it exists, it no longer exists. What is it?
My first is snapping, snarling, growling, My second's industrious, romping, and prowling. Higgledy piggledy Here we lie, picked and plucked, and put in a pie.